/*******************************************************************************
 * This file is part of the EEG-database project
 * 
 *   ==========================================
 *  
 *   Copyright (C) 2013 by University of West Bohemia (http://www.zcu.cz/en/)
 *  
 *  ***********************************************************************************************************************
 *  
 *   Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 *   the License. You may obtain a copy of the License at
 *  
 *       http://www.apache.org/licenses/LICENSE-2.0
 *  
 *   Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 *   an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 *   specific language governing permissions and limitations under the License.
 *  
 *  ***********************************************************************************************************************
 *  
 *   MeasurationDataOutputController.java, 2013/10/02 00:01 Jakub Rinkes
 ******************************************************************************/
package cz.zcu.kiv.eegdatabase.logic.controller.experiment;

import cz.zcu.kiv.eegdatabase.data.dao.GenericDao;
import cz.zcu.kiv.eegdatabase.data.dao.PersonDao;
import cz.zcu.kiv.eegdatabase.data.pojo.DataFile;
import cz.zcu.kiv.eegdatabase.data.pojo.History;
import cz.zcu.kiv.eegdatabase.data.pojo.Person;
import cz.zcu.kiv.eegdatabase.logic.util.ControllerUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.Blob;
import java.sql.Timestamp;
import java.util.Calendar;

/**
 * This controller loads a data object for the view which serves the downloading of the data file
 *
 * @author Jindra
 */
public class MeasurationDataOutputController extends AbstractController {

    private GenericDao<DataFile, Integer> dataFileDao;
    private GenericDao<History, Integer> historyDao;
    private Log log = LogFactory.getLog(getClass());
    private PersonDao personDao;

    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
        // ModelAndView mav = new ModelAndView("binaryView");
        // There should always be set integer value in this field - it is generated by view, not by user
        int fileId = Integer.parseInt(request.getParameter("fileId"));
        DataFile data = dataFileDao.read(fileId);
        Blob b = data.getFileContent();
        Person user = personDao.getPerson(ControllerUtils.getLoggedUserName());
        Timestamp currentTimestamp = new java.sql.Timestamp(Calendar.getInstance().getTime().getTime());
        History history = new History();
        log.debug("Setting downloading data file");
        history.setDataFile(data);
        log.debug("Setting user");
        history.setPerson(user);
        log.debug("Setting time of download");
        history.setDateOfDownload(currentTimestamp);
        log.debug("Saving download history");
        historyDao.create(history);
        response.setHeader("Content-Type", data.getMimetype());
        response.setHeader("Content-Disposition", "attachment;filename=" + data.getFilename());
        response.getOutputStream().write(b.getBytes(1, (int)b.length()));
        //  mav.addObject("dataObject", dataFileDao.read(fileId));
        return null;
    }

    public GenericDao<DataFile, Integer> getDataFileDao() {
        return dataFileDao;
    }

    public void setDataFileDao(GenericDao<DataFile, Integer> dataFileDao) {
        this.dataFileDao = dataFileDao;
    }

    public GenericDao<History, Integer> getHistoryDao() {
        return historyDao;
    }

    public void setHistoryDao(GenericDao<History, Integer> historyDao) {
        this.historyDao = historyDao;
    }

    public PersonDao getPersonDao() {
        return personDao;
    }

    public void setPersonDao(PersonDao personDao) {
        this.personDao = personDao;
    }
}
